Can a short multiple-choice test encourage new citizens to connect with a sense of national identity, or does it risk oversimplifying complex, contested ideas?

Researchers found the endangered yellow-eyed penguin is made up of three distinct subspecies, with the mainland lineage at greatest risk.

Bilingualism may interact with verbal memory and sex steroids to influence dementia risk in unexpected ways.

The Iran war is now testing whether the Gulf states that have long recycled their oil revenues into American markets will keep doing so.